In article , Ned Simmons
says...

That's not too unusual. One of the best references on the
common engineering plastics I have is put out by Erta. They
list properties of acetal, various nylons, PET, etc., but
they're all called Erta(something).

I could also *highly* recommend a book called
"Engineering Polymer Sourcebook." By, umm...
hmm. Forgot the author's name. If there is
interest I will post it up in the morning, from
work.

Jim

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